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证明了R(%)M 是满足(%)0-比较性的置换环当且仅当R是满足(%)0-比较性的置换环,Morita系统(ANMB)带zero pairings是满足(%)0-比较性的置换环当且仅当A和B是满足(%)0-比较性的置换环.对幂级数环亦有类似结果.“,”In this note, we prove that R(%)M is an exchange ring satisfying the(%)0-comparability if and only if so is R, and that the Morita context (ANMB) with zero pairings is an exchange ring satisfying the (%)0-comparability if and only if so are A and B. These provides a class of exchange rings satifying the (%)0-comparability. Analogue of the ring of power series is also obtained.